x=eval(input("请输入一个整数："))
y=eval(input("请输入一个整数："))
sum=count=0
for n in range(x,y+1):
    for i in range(2,n):
        if n % 1 == 0:
            break
    else:
        count = count + 1
        sum = sum + n
print("{}到{}之间的素数个数是{}，素数之和是{}".format(x,y,count,sum))